William and Janet Cohen want to use their experience as a mixed-race couple to start an open discussion on race in America.
A fresh idea brings healthy food to low-income neighborhoods.
High fuel prices make virtual field trips popular with schools – but no substitute for the real thing.
A report by the Brookings Institution looks at the 100 largest metro areas in the US, using data on residential energy consumption and highway transportation.
Robert Kennedy moved voters with talk of social justice.
His decisive victory in North Carolina shows he can rebound from setbacks, analysts say.